HP Serviceguard A.11.20 Release Notes, September 2012

made available within the extended support time frame even though a newer version of Serviceguard
is available.
Serviceguard A.11.20 is a platform release.
NOTE: For compatibility information for this and earlier releases, see the Serviceguard
Compatibility and Feature Matrix at the address given under “Documents for This Version”
(page 34). See also “Compatibility Information and Installation Requirements” (page 36) in these
Release Notes.
Feature Release
A feature release contains new Serviceguard features. Feature releases are for customers who
want to use the latest features of Serviceguard. In general, feature releases will be supported until
a newer version of Serviceguard becomes available. In order to receive fixes for any defects found
in a feature release after a newer version is released, you will need to upgrade to the newer,
supported version.
Patch
A patch to a release may be issued in response to a critical business problem found by a
Serviceguard customer, or a patch may enable new features. (Such features do not affect the
running of an existing Serviceguard cluster until you activate them, for example by reconfiguring
the cluster or reworking a package.)
In the case of a patch, the following is guaranteed:
• Patch-specific release testing is performed before the patch is posted.
• Existing functionality, scripts, etc. will continue to operate without modification.
• All fixes from the previous patch are incorporated.
Certification testing for a patch is recommended only for those fixes that are important to your
specific installation, or for new features that you intend to use.
Supported Releases
For information about the support life of a given release and its compatibility with versions of
related products, see the Serviceguard Compatibility and Feature Matrix, at http://www.hp.com/
go/hpux-serviceguard-docs.
Version Numbering
Serviceguard releases employ a version numbering string that helps you identify the characteristics
of the release. The version string has 4 parts:
• Alphabetic Prefix
• First Numeric Field
• Second Numeric Field
• Third Numeric Field
When a new release is issued, different portions of the version string are incremented to show a
change from a previous version of the product.
Release Notes Revisions
Occasionally, important new information warrants revising the Release Notes after they have gone
to press. In such cases HP updates the Release Notes at http://www.hp.com/go/
hpux-serviceguard-docs. Versions with the same part number are differentiated by the publication
date.
Release Notes Revisions 55